dcpromo not working - going from Win2k to Win08

hi folks;

i'm having issue getting modern domain controller network. i've got 2 windows 2000 dc's , i'm trying windows 2008 dc installed can modernize.

to end, reaserched process beforehand and, because have exchange 2000 machine created inetorgpersonprevent.ldf file , ran (successfully) prior issuing;

adprep /forestprep , then

adprep /domainprep /gpprep

both completed successfully. went on windows 2008 r2 machine , issued dcpromo. chose existing domain , make new server dc in domain. however, keep getting error;

"to install domain controller active directory forest, must first prepare forest using "adprep /forestprep" etc.

i did that. appeared successful. ideas on why '08 machine still won't promote?

problem solved :-)

with respect version of schema - reason schema upgraded version 31  , not 47 because adprep program run on domain controller older version (probably windows 2003 disk). 1 of many articles read on process mentioned using version - did.

in retrospect, that's going tp upgrade schema version 31 because that's latest version (according adprep program 2003)

knowing schema version directly tied adprep version obtained adprep version 2008 r2 install disk , decided try again, time using newer version.

lo & behold, ran. guess adprep program allows run once each version. ie, if run , upgrades schema 31 , run same adprep again, won't anything.

but....if run newer version recognizes it's going update shchema further , away goes.

so answer why/how upgrade schema version 31 47 run latest adprep '08 r2 dvd.

much awinish! not have been able figure out without getting me check actual version of schema (and finding out 31 , not 47).

Windows Server  >  Directory Services